216827778167 has 64 divisors (see below), whose sum is σ = 307507200000. Its totient is φ = 147418185600.

The previous prime is 216827778157. The next prime is 216827778191. The reversal of 216827778167 is 761877728612.

It is not a de Polignac number, because 216827778167 - 2⁴ = 216827778151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216827778157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1253084 + ... + 1415582.

It is an arithmetic number, because the mean of its divisors is an integer number (4804800000).

Almost surely, 2^216827778167 is an apocalyptic number.

216827778167 is a deficient number, since it is larger than the sum of its proper divisors (90679421833).

216827778167 is a wasteful number, since it uses less digits than its factorization.

216827778167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162604.

The product of its digits is 22127616, while the sum is 62.

The spelling of 216827778167 in words is "two hundred sixteen billion, eight hundred twenty-seven million, seven hundred seventy-eight thousand, one hundred sixty-seven".